title: Selective retention of methanol over ethanol by a cyclen-based cryptand/copper(II) complex.
abstract: A cyclen-based cryptand (2) was prepared in a two-step synthesis from dioxocyclen. When a Cu(CF3SO3)2 complex with 2 was prepared in methanol, the 2/Cu(CF3SO3)2 complex incorporated one methanol in the cavity formed by the diethyleneoxy unit and the NH group of the cyclen. When prepared in ethanol, the 2/Cu(CF3SO3)2 complex similarly incorporated one ethanol. Cold electrospray ionization mass spectrometry (CSI-MS) of the 2/Cu(CF3SO3)2/alcohol complexes selectively retains methanol over ethanol under CSI-MS conditions.
authors.affiliation: Department of Chemistry, Faculty of Science, and ‡Research Center for Materials with Integrated Properties, Toho University , 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Habata
authors.forename: Mari
authors.initials: M
authors.lastname: Ikeda
authors.forename: Ajay K
authors.initials: AK
authors.lastname: Sah
authors.forename: Kanae
authors.initials: K
authors.lastname: Noto
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Kuwahara